package com.ldx.cloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author lidexin
 * @create 2021-04-18 13:36
 */
@Service
public class PaymentService {

    /**
     * 正常访问，肯定OK
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池:" + Thread.currentThread().getName()+" paymentInfo_OK,id:" + id+"\t"+"O(∩_∩)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TIMEOUTHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value="5000")
    })
    public String paymentInfo_TIMEOUT(Integer id) {
        int timeNumber = 3;
//        int age = 10/0;
        try{
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:" + Thread.currentThread().getName()+" paymentInfo_TIMEOUT,id:" + id+"\t"+"O(∩_∩)O哈哈~" ;
    }

    public String paymentInfo_TIMEOUTHandler(Integer id) {
        return "线程池:" + Thread.currentThread().getName()+" paymentInfo_TIMEOUTHandler,id:" + id+"\t"+"兜底了";
    }


    //-----------------------服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name="circuitBreaker.enabled",value="true"),//是否开启断路器
            @HystrixProperty(name="circuitBreaker.requestVolumeThreshold",value="3"),//请求次数
            @HystrixProperty(name="circuitBreaker.sleepWindowInMilliseconds",value="10000"),//时间窗口期
            @HystrixProperty(name="circuitBreaker.errorThresholdPercentage",value="10"),//失败达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("*****id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号："+serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id不能负数，请稍后再试，id:" + id;
    }


}
